CODEWITHSUNDEEP
c++undeclared-identifier
Cindy Lara
Cindy Lara

Reputation: 1

I have an error in my code, undeclared identifier

When trying to compile it says error

error: use of undeclared identifier 'isVowel'; did you mean 'islower'?

#include <iostream>

#include <cstring>

using namespace std;

int main() {

char word[50];

int num = 0;

cout << "Enter word: ";

cin.getline(word,50);

for(int i=0; word[i]; ++i){

if(isVowel(word[i]))

++num;

}

cout<<"The total number of vowels are "<<num<<endl;



}

bool isVowel(char c){

if(c=='a' || c=='A')

return true;

else if(c=='e' || c=='E')

return true;

else if(c=='i' || c=='I')

return true;

else if(c=='o' || c=='O')

return true;

else if(c=='u' || c=='U')

return true;

return false;

}

Upvotes: 0

Views: 834

Answers (1)

user10957435
user10957435

Reputation:

You need to prototype your function before you use it. Otherwise the compiler doesn't know it exists:

bool isVowel(char c); // A prototype of the function you will later call

int main () {
    //... Whatever code you're doing....


}

bool isVowel(char c) {
   // Actually implement it here.

}

Upvotes: 1

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